Comunication pic to pic with two 16f628 chips

[aletavola]

Hi friends;
I have two 16f628, one need to talk to PC by rs232, do delta sigma AD and send a messages the other 16f628.

I2C is a good idea? How can i implement i2c slave mode in 16f628?

Thanks

Alexandre Tavola

[PCM programmer]

The 16F628 doesn't have an SSP module, so there's no easy way to
do an i2c slave.

[aletavola]

Any sugestion? I just need to send a message to another pic.

[aletavola]

Can i use another two pins of first chip to send serial data to the second pin?
i have two pins available.

[arunb]

Yes you can use serial method, but you may need to use interrupts on the receive pins, for better efficiency.

thanks
arunb

[aletavola]

i have no ideia how to implement this... but... i think is is not so difficult.

i belive that i can use two streams, one for pc and other for pic intercom.
i just need to write a value to second pic.

I belive that i just need to implement a software uart in first pic and write data to it. (the second pic is watting the info with gets()) and use the hard uart to comm with pc.

Thanks

Alexandre

[dyeatman]

Just FYI, There is a simple PIC-to-PIC comm setup in the CCS FAQ:

http://www.ccsinfo.com/faq.php?page=connect_pics